Spraying booth



Dec. 21 1926.

Filed July 17, 1925 1,611,756 c. c. LEIGH SPRAYING BOOTH I 2 Sheets-Sheet 1 TTORNEYS.

Dec. 21 Y, 1926. 1,611,756

C. C. LEGH 'SPRAYING' BOOTH Filed July 17, 1925 2 Sheets-Sheet 2 w, .Y 'o Z7 4*.3* 4, /f/ Z ZZ Z ll. l Il i IH mm'i'nlm me l'-, if Z; /3 I 20 47 ZZ T? Z5 /j Z5 r in Z5 7 'W 4f 5% y) fg im. l

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3f' L Y J INVENT R3 Zff ATTORNEY?y Patented Dec. 42.1, 1926.

CHARLES C. LEIGH, OF PHILADELPHIA, PENNSYLVANIA.

SPRAYING BOOTH.

Application filed .Tuly 17, 1925. Serial No. 44,390.

My invention relates to a novel construction of a spraying booth wherein a suitable casing is provided which is partially enclosed but is left open for about one half its area, so that the operator can have ready access thereto and direct the spraying or air brush mechanism readily to the desired points upon the article to be sprayed.

It further consists of a novel construction of a rotatable article support mounted in the lower portion of the booth, so as to be freely rotated therein by suitable mechanism, means beingalso provided for tilting sald support according to requirements.

It further consists of novel means for lighting the interior of the booth both above and below the article or support for the glass or other article which is to be sprayed and of a novel arrangement of an exhaust fan for exhausting air or odors fromthe booth.

It further consists of novel clauu'iing means for securing the article to be sprayed with respect to its rotatable and adjustable support.

It further consists of novel means for adjusting the height of the spraying booth with respect to its support.

It further consists of a novel construction of spraying booth mounted above an electric motor4 and its adjuncts, which drives a vertical shaft passing through the base of Said spraying booth, said shaft carrying a, ring, provided with clamping devices, and serving as an article support, above and below which are lighting devices, said booth being also provided lwith an exhaust fan. u y

It further consists of other novel features of construction and advantage all as will be hereinafter fully set forth and pointed out in the claims.

For the purpose of illustrating my invention, I have shown in the accompanying drawings forms thereof which are at present preferred by me, since they have been found in practice togive satisfactory and reliable results, although it is to be understood that the various instrumentalities of which mv -invention consists can be variously arranged vand organized and that my invention 1s not limited to the precise arrangement and organization of these instrumentalities as herein shown and described.

Referring to the drawings Fig. 1, represents a view partly in elevation and partly in sect-ion of a novel spraying booth, embodying my invention.

Fig. 2, represents on an enlarged scale a partial section taken upon the line 2 2 of Fig. 1. l

F ig. 3, represents a view in section taken upon the line 3*-3 of Fig. 1, certain of the parts being in elevation.

Fig. 4, represents a view in section taken upon the line 4 4 of Fig. 3, certain of the parts being in elevation.

Fig. 5, represents a fragmentary view partly in section and partly in elevation of a slightly modified form of apparatus embodymg the invention; and

Fig. 6, is a fragmentary view partly in elevation and partly in section of still another moditied forni of the invention.

Similar numerals of reference indicate corresponding parts.

Referring to the drawings, and more particularly to Figs. 1 to 4 inclusive, 1 designates a supporting frame or stand, which for illustrative purposes is disclosed as of tripod form. Fixed upon the top of the frame l, as by rivets 2 or the like is a plate 3, which carries an electric motor 4. Also carried by plate 3 is an inverted U'shaped bracket 5, posed sleeve (i screw threaded at its top to receive the internally screw threaded portion of a casing 7, it being understood that the bracket 5, sleeve and casing 7 are fixed and stationary. 'Ihe casing 7 has about one halt' cut away, as will be apparent. from Figs. 3 and 4, whereby a booth or hood is formed which is readily accessible to the operator. The shaft of motor 4 is provided with a bevelled gear 8 which meshes with a bevelled gear 9 fixed to the vertical shaftl() journalled in the Sleeve (i, which shaft 1() carries at its top a serrated extension 11. The extension 11 is provided with a plate 12, which bears upon balls 13 seated in the top of sleeve 6 to provide an antifriction bearing for said extension 11. Preferably, a casing 14 surrounds the motor 4, bracket 5 and gears 8 and 9 and may be supported in any suitable manner by the plate 3. 15 designates a. serrated upper extension for ctv-operatively engaging the serrated extension 11 and is secured with respect to the latter by a thumb nut 16 for tilting the extension 15, which carries a generally dished frame 17 which latter carries au annular or ring like member 18, which latter is adapted to support an article of glass 19 upon which is to be delineated by which carries a vertically disa suitable method, .forming no part of the present invention, suitable lettering, numering, pictures, r other insignia or designations. The article of glass, pottery or the like 19 is secured with respect to the ring 18, by means of a suitable clamping device shown in the drawings, as comprising a series of relatively U-shaped clamping members 20 pivoted as at 21 to lugs 22 depending froln the underside of the ring 18, as best seen in Fig. 2. The upper end of each of said members or clamps 20 is provided with I a vertically disposed thumb screw 23, the lower end of each of which is provided with a rubber tip 24 so that when said thumb screws are screwed down the rubber tips will prevent cracking of the glass pottery or other article 19. It will be apparent that with an article 19 clamped in place upon the ring 18, the operation of the motor 4, bevel gear 8, bevel gear 9, shaft 10, and extension 11 will impart rotary movement to the ring 18 together with the article 19, clamped, thereto. The base plate 25 of the casinor 7 carries a pluralit ofincandescent bulbs l26 for illuminatmg the underside of the transparent article 19. Carried by the casing 7 is an air distributor 27 rwhich is manually controlled by a hand valve 28 and 29 designates a gauge to determine the pressure of'air passing through distributor 27 from the air inletl pipe 30, the air outlet tothe brush (not shown) being indicated at 47. Also carried by casing 7 is an electrically operated exhaust fan 3l located in the upper portion thereof and at the top of the casing 7 is located an incan-I descent bulb 32, provided with a reflector 33. The electric motor 4, incandescent bulbs 26 and 32, and the exhaust fan 31 are operated by currents supplied thereto from a common line designated 34-35, provided with switches of the usual construction.

Referring now to Fig. 5, the construction is similar to that shown in the foregoing figures except that instead of the ring 18 being adju'stably mounted with respect to shaft 10, I have shown the same rigidly fixed with respect to said shaft.

Referring now to Fig. 6, the frame or tripod 1, has adjustablyL arranged at its top, a tube 36, the lower end of which is exteriorly screw threaded as at 37. An upper nut 38 and a lower nut 39 are arranged upon opposite sides of the top of the frame 1 for co-operatively engaging the screw threaded part of the tube 36 and a butterfly or wing nut 39 is provided for clamping the above described arts toeether in the desired adjusted position. (arried by the top of tube 36 is a collar 40 secured to the tube 36 by means of a set screw 41. This collar-40 is provided with arms"42 which carry a ring 43 generally similar to the ring 18 previously described, which is provided with clamps 2 0, of the character described. Below the ring 43 and carried by the tube 36 is an incandescent bulb 44, which functions for the same purpose as the incandescent bulbs 26 and the lead wires, of which there are two, Jfor said bulb 44 are designated 45 and 46, and may be provided with switches ot" the usual construction.

The operation is as follows The article 19, which may be glass, pottery ware or the like having been clan'ipedin position upon its supporting ring, the motor 4 is started, whereupon rotation is imparted to the ring 18 and the article carried thereon. The upper and lower lights 32 and 26 effectively illuminate the article and the desired pigment-s can ybe readily sprayed upon the revolving articles to form the circles, rings or the like of the same or varying colors, which it may be desired to portray. The exhaust fan 31 quickly withdraws all objectionable A odors from the interior of the hood or booth 7. The device is readily portable, and can be easily installed at any desired point upon its supporting frame or tripod.

lVhen the electric motor 4 is shut off or stationary, the annular article support or ring-like member 18 becomes stationary and by means of the serrated upper extension 15 which cooperatively engages the lower serrated extension 11 and by proper manipulation of the thumb nut 16 the article support 18 can be tilted to any desired angle so as to serve as a stationary decorating easel or support for the circular or other article while being sprayed or decorated, the article of glass, pottery or the like being secured in a stationary or tilted position. This provides a very convenient arrangement l'or linishing the article without removing it from its support, as is evident.

The combination of the lights 32 and 26 for simultaneously illuminating the upper and lower sides of the glass, pottery or the like is new and"no\'el and very useful in practice, as it enables the operator to discern any imperfections in the article which may not have been fully or adequately sprayed or decorated to the desired extent.

As brought out hereinbefore, the novel spraying booth of my invention, as a single and unitary construction and apparatus, has been devised not only greatly to facilitate the spraying of glassware,.but has been especially devised for the expeditious handling of illuminating glassware during the spraying operation and for greatly facilitating and expediting the mounting and removal of glassware, increasing the speed of spraying, and for greatly improving the resultant product by the provision of novel illuminating means, whereby the inal result or effect. of a sprayed coating of pigment can be observed and appraised during the spraying operation.

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pigment by below the article support and the light 33 above the article support, permits the observation of the article by both transmitted and reflected light. vBy this means, the operator, is enabled to appraise the value of the pigment coating, by both transmitted and reflected light, that is, under the two different conditions of its use in practice, to wit, its use while illuminated rom within, as at night time, and its use in the day time while not illuminated at all, but observed by reflected light from without.

The clamping devices also cooperate with the skeleton article support, not only to facilitate the quick and expeditious handling of the glass discs or the like 1S), more particularly because of the fragile character of the same, but the clamps 2t), shown in Figures l and 2, also cooperate with the skeleton article support, to clamp a relatively large glass dise or plate, upon said support in such a. manner as merely to clamp the edge. thereof, so as to leave the central or body portion of the disc unobstructed from below as well as from above, for the free passage of light therethrough.

lt will now be apparent that I have devised a novel and useful construction of a spraying booth which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance shown and described a preferred embodiment thereof which will give in practice satisfactory and reliable results, it is to be-understood that the same is susceptible of modification in various particulars Without depart-ing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is

1. In a device of the characterstated, a booth open at its front and closed at its top and rear, a vertically disposed shaft rotal tably mounted in the base of'said booth, a frame adjustably mounted on said shaft, a supporting ring carried by said frame, clampingdevices carried by Asaid ring, illaminating devices above and below said ring, and an exhaust fan in the upper portion otl said booth.

2. In a spraying booth, a stand, an electric motor supported thereon, a vertical shaft, gearing intermediate said shaft and motor, a skeleton article support carried by said shaft and rotatable in unison therewith, clamping devices pivotally mounted on said article support and carrying thumb screws having resilient ends adapted to engage the outer peripher of the article to be s rayed, and lighting evices carried by sai booth above and below said article sup ort.

3. In a spraying booth, a stan an electric motor supported thereon, a vertical shaft, gearing intermediate said shaft and motor, a skeletor article support carried' by said shaft and rotatable in unison therewith, clamping devices pivotally mounted on said article support, and carrying thumb screws having resilient ends adapted to engage the outer periphery of the article to be sprayed, lighting devices carried by said booth above and below said ring, an exhaust device supported in proximity to an opening in said booth, and ar. air distributing device carried by said booth and having an inlet and outlet for compressed air.

CHARLES C. LEIGH. 

